Apparatus for mixing gas and air



(No Model.)

J. R. SGHRIMSHAW. APPARATUS FOR MIXING GAS AND AIR.

4 apparatus.

UNTTED STATES PATENT OEETCE,

JAMES R. SGHB-IMSHAV, OF BROOKLYN, NEXV YORK.

APPARATUS FOR MIXING GAS AND Aia.

SPECIFICATION forming part of Letters Patent No. 325.448, datedSeptember l, 1885.

l Application tiled November 12, 1884. (No model.)

.To @ZZ whom it may concern.'

Beit known that I, J AMEs R1 Sciminsunw, of the city of Brooklyn, in thecounty of Kings and State of N ew York, have invented a new and usefulImprovement iu Apparatus for Mixing Gas and Air, and I hereby declarethe following to be a full and clear description thereof.

The object of this invention is to produce an improved apparatus forsecuring a gasolinegas of equal or nearly equal richness and photometricpower throughout the entire time a charge of the carburetor is beingconsumed, so that the gas thus produced can be as readily used with theordinary gas-burners as with the adj ust-able burners hitherto requiredfor equalizing the consumption of gasoline-gas.

The mechanism and other details of the machine will be hereinafter fullyexplained, and will be readily understood by reference to theaccompanying drawings, of which- Figure l is an elevation of a completegasmachine, except the carburetor, which is not shown, it usually beingplaced outside of the building at some distance from the rest of theFig. 2 is a sectional elevation of my regulating and mixing attachmentto the machine. Fig. 3 is asectional plan, and Fig. et is a top plan, ofthe regulator and mixer as shown in Fig. 2.

In this machine or apparatus, as in most, if not all, carburetinggas-machines in which atmospheric air is carbureted by admixture of thevolatile parts of naphtha or gasoline, there is uscd an aiiiorcingmachine, which is in the drawings represented by the chamber A, themechanism of which said air-forcing machine is operated by a weight, YV,in a well-known manner, the details ot' which need not be herein anymore minutely described.

In the apparatus under consideration atmospheric air is admitted to theair-forcing machine through the pipe A', and driven out therefromthrough the pipe A2 to a carbureting apparatus, (not showm) and from thesaid carburetiug apparatus the carbureted air or.

illuminating-gas is forcedthrough the pipe B to the mixing andregulating machine B, as shown in Fig. l, this mixing and regulatingattachment constituting the essential feature of this invention. In thisregulating and mixrlever, C3, for rot-ating it.

ing attachment or apparatus B just the proper quantity of atmosphericair is admitted to the gas from the carbureting-machine to render thesaid gas of the proper richness and photometiic quality, and the air soadmitted is thoroughly mixed up with the gas. r)Che outer shell of thesaid regulator and mixer is designated by the letter B, and this shellcontains in its bottom part a pair of concentric cylinders, C and C',and two or more diaphragms, D D D2 Di, separating the upper part of theshell B into several mixing-chambers, from the top one of which the gasis discharged through an equalizing eduction-pipe, G, as presentlyexplained.

Referring to the concentric cylinders C C', the outer cylinder, C, issecured to the 'bottom plate of the chamber B, and the inner cylinder,C, is neatly and accurately fitted into the outer cylinder, so as toform a close contact between the two, and yet permit the inner cylinderto rotate within thc outer one. Transverse bars c are attached to theupper end of the rotating cylinder C, and an operating or rotating rodor shaft, C2, attached to the bars c, extends up through the chamber B,and passes out at the top thereof through a stuffing-box, b, above whichit is provided with a Just below this lever, and attached to the chamberB, is a graduated segmental guide-plate, Cjwhich has several stop holes,c', arranged to receive a holding-pin, ci, which passes through thelever in the form of a spring-latch operated by the handle c and springc4.. The handle or lever C is used to turn the cylinder C as required,for the purpose presently explained, and the pin cz and segmentalstop-plate G'L hold the said cylinder just in the position required.

The rotating cylinder C' has a series of ci rcumferential apertures, c cci, &c.,which are so arranged that any one of them may be placed so asto cover the port or inlet from thc pipe E, as may be required, bysimply turning the said cylinder C' by means of its lever or haudle C3,and the said apertures are graduated in size, so that by turning thesaid cylinder to the right or to the left, as thc case may be, a largeror a smaller aperture is presented to the opening of the pipe E; and themechanism of the parts above described is such that IOO the governor Fto the interior of the cylinderA C. The governor F may be any suitablegovernor or any of those now in use for measuring or regulating the flowof air into a carbureting gas-machine and preventing a reflux of gasfrom the machine into the air-pipe. The air thus passed through thegovernor F and the pipe E is taken from the airforcing pipe A through abranch, A3, leading therefrom to the said governor F. The gas enteringthe regulating and mixing machine through the pipe B is met in theinterior of the cylinder C by the incoming current of air from the pipeE, the quantity of air so admitted being regulated by the size of theaperture e e e2, Src., which is presented to the pipe E, and thisquantity is regulated to suit the state of the gasoline or naphtha inthe carburetor. Thus for new or very volatile gasoline or naphtha a muchlarger quantity of air must be mixed with the gas than after thegasoline or naphtha shall have become somewhat spent, and the quantityof air so admitted requires to become daily less until the gasolineshall have become fully spent, and consequently the holes e, Src., areregulated to meet this requirement by making the said holes or aperturesof varying sizes, and adjusting the largest of them to the pipe E whenthe carburetor is first charged, and then in a day or so turning thenext smaller hole to the pipe E, and in a day or so more the nextsmaller hole, and so on through the series.

From the top of the cylinder C the mingled gas and air passes upward andthrough the series of perforated diaphragms placed in the upper part ofB to break up and thoroughly mix the mingled air and gas and make it ahomogeneous mixture. To fully accomplish this result the said diaphragmsare made partly solid and partly perforated, the solid part of onecoming opposite the perforated part of the adjacent ones, and viceversa, so that in passing through the chambers formed by thesediaphragms the gas and air are thoroughly mixed up. From the topmostchamber of this series of mixing-chambers a horizontal eduction-pipe, G,receives the gas and conveys it to the service-pipe G. The horizontalpipe G has circumferential openings g, the combined areas of which arejust equal to the area of the service-pipe G, and by this arrangementthe gas delivered to the said service-pipe is taken equally from eachstratum of the delivering-chamber in which the pipe G is placed.

Having described my invention, I claiml. The con1bination,with amixing-chamber of a gas apparatus, of a fixed cylinder, an airinductionpipe communicating with said cylinder through its periphery, a rotarycylinder closely fitted Within said xed cylinder, provided with holes ofvarying sizes opposite the induction pipe of the outer cylinder, andmeans for turning said rotary cylinder to bring'different holes oppositesaid pipe for varying the amountof air admitted to the mixing-chamber,substantially as described.

2. The combinatiomwiththemixingchamber of a gas apparatus, of ahorizontal discharge-pipe provided Withrtransverse or spiral slots, andan eduction-pipe connected to said slotted pipe, substantially as,described.

3. The combination, in a gas apparatus, of a mixiug-chamber-providedwith a series of perforated diaphragms, the perforations of one of thediaphragms being opposite the solid portions of the adjacent diaphragms,a horizontal pipe above the upper diaphragm provided withcircumferential slots, and an eductionpipe connected to said slottedpipe, substantially as described.

4. In combination With fixed cylinder C, the rotating cylinder C',provided with apertures e e' e2, of varying sizes, the operating rod orshaft C, attached to said cylinder for turning it, so as to present anydesired one of the said inlet-apertures to the inlet-port of anair-supply pipe, the operating-lever C3, with its springcatch c2, andthe segmental guide-plate C", graduated with notches or holes for thecatch c, so as to secure the cylinder C in proper position to place therequired inlet-aperture fairly over the inlet-port of the air-supplypipe, the whole combined and arranged as described.

5. The combination, in a gas apparatus, of the mixing-chamber B,concentric cylinders G C', arranged at the bottom of said chamber, theouter of said cylinders being fixed, and the inner one rotary andprovided With perforations of various sizes, the gas-induction pipe B',opening through the bottom of said chamber into the inner cylinder, theair-induction pipe E, passing through said chamber and through the shellof the outer cylinder opposite the circumferential perforations of theinner cylinder, a shaft connected to said inner cylinder, means forturning and adjusting said inner cylinder to bring different-sized holesthereof opposite said air-induction pipe, the perforated diaphragmswithin said chamber above said cylinders, the horizontal slottededuction-pipe G,.above said diaphragms, and the eduction-pipeG connectedto said slotted pipe, substantially as described.

JAS. R. SCHRIMSHAXV. lVitnesses:

M. RANDOLPH, W. J. DoUGHrY.

ITO

IIO

IIS'

